function query(){
	var department = "";
	var year="";
	var month="";
	var eventType="";
	if($("#chk_department").is(":checked")){
		department = $("#department").combobox('getValue'); 
	}
	if($("#chk_year").is(":checked")){
		year = $("#year").combobox('getValue'); 
	}
	if($("#chk_month").is(":checked")){
		month = $("#month").combobox('getValue'); 
	}
	if($("#chk_eventType").is(":checked")){
		eventType = $("#eventType").combobox('getValue'); 
	}
	var data = ""+"department="+department+"&year="+year+"&month="+month+"&eventType="+eventType;
	$("#report").datagrid({
		url:'Statistics_query?'+data,
		title : '统计信息',
		loadMsg : '加载中...',
		iconCls : 'icon-search',
		width : '100%',
		height : 360,
		columns : [ [ {
			field : 'TOTAL',
			title : '案件总数',
			width : 160,
			align : 'center',
			sortable : 'true'
		}, {
			field : 'UNFINISHED',
			title : '未完成数',
			width : 160,
			align : 'center',
			sortable : 'true'
		},
			{
			field: 'FINISHED',
			title:'已完成数',
			width : 160,
			align : 'center',
			sortable : 'true'
			},
			
			{
				field: 'PERCENT',
				title:'完成百分比',
				width : 160,
				align : 'center',
				sortable : 'true'
				}
		] ],
		singleSelect : true,
		collapsible:true,
		pageSize : 10,
		pageList : [ 10, 20, 30 ],
		pageNumber : 1,
		sortName : 'TOTAL',
		sortOrder : 'desc',
		pagination : true,//分页控件 
		rownumbers : true
	});
}